Week 1 exam notes
The invasive quagga mussel (Dreissena rostriformis) is found in the Great Lakes
Zebra mussels are filter feeders and as a consequence of their abundance, water is much
clearer in many lakes.
Matching terms with definitions:
__1__ Dioecious 1
. separate males and females
__4___ Unionidae 2 modified pouches of female gills
__3__ Lure 3
__5__ Glochidia modification of the mantle tissue
. family of freshwater native mussels
5 parasitic larval stage
life stages in order from youngest (1) to oldest (5).
__3__ glochidium in host gill
__2__ glochidium in marsupium
__4__ juvenile mussel
Obligate parasitism : means that an organism must parasitize a host at some stage to
complete their reproductive cycle.
Key Points in Wee